New phone unable to activate - chat agents can't help either

Purchased a Samsung S24 direct from the Xfinity Mobile website. Phone arrived, works great, but I'm having a tough time with activation.

I went into my account and tried to start the process, it gave me some sort of error and said try again later. So I did, several times, with the same result.

The next day I tried again but this time it said I had made too many attempts, and needed to either chat or call in to finish activation. 

I tried chat, and after going through several agents, was told I've tried activation "too many times" and need to go to a physical Xfinity store to activate. This is not an acceptable solution by any means. I asked for a supervisor and they supposedly escalated by case, claiming someone will reach out to me within 24 hours... but I seriously doubt that will take place (that's been my experience in the past).

Is there any way to get help from an agent here? I'm not asking for much, just want to activate the new phone I purchased so I can ship the old trade-in back ASAP.